Container for pressure fluids



M0 22 1929. P, JOYCE 1,732,235

CONTAINER FOR PRESSURE FLUIDS.

Filed July 5, 1927 i i 8 8 INVENTOR.

' Patented Oct. 22, 1929 PATENT OFFICE BRYAN JOYCE, OF DAVENPORT,

CONTAINER non ZPRESSURE FLUIDS Application filed July 5, 1927.

The subject of this invention is a container for pressure fluids.-

The packing disclosed in my patents Nos. 1,635,482 and 1,651,131, issuedJuly 12, 1927 5 and November 29, 1927, is preferably used in this invention. The principal object of this invention is to provide an all metal container for pressure fluids which is largely made of tubing instead of a forging, the advantages of this construction being,

- 1. Containers are now constructed of forgings and very expensive equipment is required in their manufacture; the containers of the present invention require but ordinary I equipment in their manufacture.

2. When manufactured from forgings, containers must be practically complete before they can be tested for strength and p0- -ros ity, while the parts of the present 1nvention may be tested in the rough. Y

' 3. The interior surface of the present container may be tinned or have some other suitable coating applied thereto, thereby correcting any slight porosity of the material as well as preventing deterioration through rust or attack of the container walls by the fluid contained therein.

4. My containers are made of high grade material with conse uent'saving in weight, thereby materially re ucingshippingcharge's. 5. In some cases it is necessary that the fluid contained bedry; for example, the ni-' trogen for use in hydropneumatic recuperators for gun carriages. The containers made from forgings have but one small opening and-as moisture accumulates in them through condensation it is very diflicult to dry them.

. The head of the present containermay be removed and the interior thoroughly dried and cleaned. I T 6.- The present invention has the advantage that should anypart lee-damaged either in manufacture or service, that part may be replaced. Another object of my inventionlis to provide a sealed removable head for containers so constructed that the sealing effect is proportional to the fluid pressure within the container, and will increase as the pressure is increased.

I The tube, 1, is provided with the external Serial No. 203,514.

To these and other ends, my invention consists in the construction, arrangement, and combination of elements, described hereinafter, and set out in the claims forming a part of thisspecjfication.

One embodiment of my invention is illustrated by way of example in the accompany- I ing drawing, wherein:

Figure1 is a longitudinal sectional view of a container constructed in accordance with the invention.

The container consists of a metal tube or cylinder, having its bore enlarged at each end to form shoulders, 6, against which the heads, 2 and'3, are seated. Each head is provided with an all metal packing ring, 4, pref- .erably made of a broad ring of lead or similar soft metal, between two channel rings of copper or harder metal, as disclosed and claimed in my patents Nos.. 1,635,482 and 1,651,131. Each head has its periphery cut away on its outer face to afford a seat for its adjacent packing ring. The heads and packing are secured in place by the ring, 7, threaded into the tube, 1, as shown. The ring, 7, is provided with spanner slots, 8, for assembly and may be locked in place by the pin, 15. The ring, 5, prevents distortion of the packing, 4, when the ring, is screwed home.

The head, 3, may be provided with a central boss containing a tapped hole, 17, to be used in disassembling it.

Figure 1 shows a separable valve assembly consisting of the cylindrical piece, 11, having a flange, 13, which seats against an annular shoulder, 13*, formed upon the head,

'2, and is held in place by an externally threadsecured or formed. Spanner slots, 10, may be provided in the ring, 9, to allow thev use of a'spannerwrench therewith and spanner holes, 14, maybe provided in the head, 2, to assist in assembling and disassembling the piece, 11. i

' of the other metal parts of the container.

threads, 16, to receive the customary cap used to protect the valve when the'container is in transit.

It may be seen that the parts are so arranged as to permit the pressure over the whole area of the heads or-the valve to be transmitted to the packing, thereby forcing the soft lead in close contact at the joints to form an effective seal; the harder copper retaining rings preventing the flow of the lead under the pressure. It is understood that' metals other than lead and copper may be used, thesemetals being disclosed as they have been found effective. 7

The discovery of this all metal packing made the present invention possible, for in this invention the life and effectiveness of the container is dependent upon the life and effectivenessof the packing used. 4 This packing has been fully tested and holds gas under high presures without leaking. As this packing is all metal, its life is as long as that In my invention the-casing, 1, is preferably made of steel tubing, and the heads may be of any metal desired, such as drop forgings, cast. steel or bronze, the packing allowing suflicient movement to compensate for any difference 1n coefliclent of expanslon between the metals.. Should castings be used for the heads, any slight rosity of such castings may be corrected y coating their l inner surfaces with tin or other suitable materiaL- As this construction permits choice of-material to be used in the heads, the flu1dport and valve housing may be made integral or other with one of the heads.

In using my invention the heads are mount ed in the ends of the c linders and the locking rings, 7, are screwed ome and may be tight- .ened sufliciently to afford the desired initial pressure u on the gacking rings, 4. The gas uid is t en fed into the cylinder through the port, 12, which may be then closed by any of the valves in common use, my mvention'not being limited to any particular form of valve. As the cylinder rlses, it tendsto drive the heads more tightly against the packing rings and .to flatten the lead rings, thereby expanding them radially and-"increasing their sealing effect against the adjacent portions or; the cylinders and heads.

The foregoin illustrates and a combinationand arrangement of elements seatable upon the shoulder having its periphery cut away on the outer side, and form- 2. A container for fluids under pressure.

comprising a metallic cylinder having its bore enlarged at one end and a shoulder formed at the inner end of the bore, a head seatable upon the shoulder having itsperiphery cut away on the outer side,'and form-- ing an annular seat, a packing ring seated on said seat,s31id packing ring comprising a" lead filler ring restrained from escape at its sealing surfaces b rings of harder metal, and means for-10c ing the packing ring securely against the head.

3. A container for fluids under pressure comprising a metallic cylinder having its bore enlarged atone end and a shoulder formed at the inner end of the bore, a head seatable upon the shoulder having its periphery cut away on the outer side, and forming an annular seat, a packing of soft metal restrained between two laterally cupped rings of relatively hard metal seated in said seat, and means for locking the packing ring securely against the head.

In testimony whereof he afiixes his signa ture.

' BRYAN P. JOYCE.

pressure of the gas fed into the constituting the preferred embodiment of my invention, but. it is obvious that many I modifications thereof may be made without" departing from the spirit of my invention.

claim: v I '1. A container for fluids under pressure comprising a metallic cylinder having its bore enlarged. at one end and a shoulder;"

formed at the inner end of'the bore,. a' head. 

